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<h1>QVKeypoint Class Reference<br/>
<small>
[<a class="el" href="group__qvip.html">Image processing</a>]</small>
</h1><!-- doxytag: class="QVKeypoint" -->
<p>Class for image key point data-type.  
<a href="#_details">More...</a></p>

<p><code>#include &lt;<a class="el" href="qvkeypoint_8h_source.html">QVKeypoint</a>&gt;</code></p>

<p><a href="classQVKeypoint-members.html">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#a148b5e81b32cafe6406c40034b0f47e8">QVKeypoint</a> (const double x=0.0, const double y=0.0, const double scale=0.0, const double orientation=0.0)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Default constructor.  <a href="#a148b5e81b32cafe6406c40034b0f47e8"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#a2453df6dc84e031bc4afa1efbf466c80">QVKeypoint</a> (const <a class="el" href="classQVKeypoint.html">QVKeypoint</a> &amp;other)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Copy constructor.  <a href="#a2453df6dc84e031bc4afa1efbf466c80"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#a9cde4105b3b16cf3a15a48f3408f463e">operator QPointF</a> () const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Point conversion operator. Gets the location of the image feature in a QPointF object.  <a href="#a9cde4105b3b16cf3a15a48f3408f463e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">QPointF&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#abebe9e70ef7d88c5f311b4cd9c5a77ea">location</a> () const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Gets the location of the image feature. Gets the location of the image feature in a QPointF object.  <a href="#abebe9e70ef7d88c5f311b4cd9c5a77ea"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#a2c80b2e40b1e5e2585525d4b1ee5a58d">x</a> ()</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Horizontal coordinate of the image feature.  <a href="#a2c80b2e40b1e5e2585525d4b1ee5a58d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#ad084300ee994cf4e08e5957f9ea88afe">x</a> () const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Horizontal coordinate of the image feature.  <a href="#ad084300ee994cf4e08e5957f9ea88afe"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#ac9ce66379d45defd17d419bb4eb6030f">y</a> ()</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Vertical coordinate of the image feature.  <a href="#ac9ce66379d45defd17d419bb4eb6030f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#a8a8ed89a8cbf7e7bc41b2212bca03ae2">y</a> () const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Vertical coordinate of the image feature.  <a href="#a8a8ed89a8cbf7e7bc41b2212bca03ae2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#a2956acf9396b76e3b94a1e7a62351c5c">scale</a> ()</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Scale of the image feature.  <a href="#a2956acf9396b76e3b94a1e7a62351c5c"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#a0274614c1bab48ccb045d300fdd0d8d4">scale</a> () const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Scale of the image feature.  <a href="#a0274614c1bab48ccb045d300fdd0d8d4"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#a7deaee6fcefb2b6e61d9bf90205d027c">orientation</a> ()</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Orientation of the image feature.  <a href="#a7deaee6fcefb2b6e61d9bf90205d027c"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classQVKeypoint.html#a68a178a654a5aa9a3fad62ea9336aa16">orientation</a> () const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Orientation of the image feature.  <a href="#a68a178a654a5aa9a3fad62ea9336aa16"></a><br/></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Class for image key point data-type. </p>
<p>The pixel location, the scale and the orientation identify several kinds of image features. This class models these image features. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00039">39</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>
<hr/><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" id="a148b5e81b32cafe6406c40034b0f47e8"></a><!-- doxytag: member="QVKeypoint::QVKeypoint" ref="a148b5e81b32cafe6406c40034b0f47e8" args="(const double x=0.0, const double y=0.0, const double scale=0.0, const double orientation=0.0)" -->
<div class="memitem">
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      <table class="memname">
        <tr>
          <td class="memname">QVKeypoint::QVKeypoint </td>
          <td>(</td>
          <td class="paramtype">const double&nbsp;</td>
          <td class="paramname"> <em>x</em> = <code>0.0</code>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const double&nbsp;</td>
          <td class="paramname"> <em>y</em> = <code>0.0</code>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const double&nbsp;</td>
          <td class="paramname"> <em>scale</em> = <code>0.0</code>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const double&nbsp;</td>
          <td class="paramname"> <em>orientation</em> = <code>0.0</code></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td><code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Default constructor. </p>
<p>Creates a new keypoint location for an image feature.</p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>x</em>&nbsp;</td><td>horizontal image coordinate for the image feature. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>y</em>&nbsp;</td><td>vertical image coordinate for the image feature. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>scale</em>&nbsp;</td><td>scale of the image feature. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>orientation</em>&nbsp;</td><td>orientation of the image feature. </td></tr>
  </table>
  </dd>
</dl>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00054">54</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

</div>
</div>
<a class="anchor" id="a2453df6dc84e031bc4afa1efbf466c80"></a><!-- doxytag: member="QVKeypoint::QVKeypoint" ref="a2453df6dc84e031bc4afa1efbf466c80" args="(const QVKeypoint &amp;other)" -->
<div class="memitem">
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      <table class="memname">
        <tr>
          <td class="memname">QVKeypoint::QVKeypoint </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="classQVKeypoint.html">QVKeypoint</a> &amp;&nbsp;</td>
          <td class="paramname"> <em>other</em></td>
          <td>&nbsp;)&nbsp;</td>
          <td><code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Copy constructor. </p>
<p>Creates a new keypoint location from another.</p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>x</em>&nbsp;</td><td>horizontal image coordinate for the image feature. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>y</em>&nbsp;</td><td>vertical image coordinate for the image feature. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>scale</em>&nbsp;</td><td>scale of the image feature. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>orientation</em>&nbsp;</td><td>orientation of the image feature. </td></tr>
  </table>
  </dd>
</dl>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00066">66</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

</div>
</div>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a9cde4105b3b16cf3a15a48f3408f463e"></a><!-- doxytag: member="QVKeypoint::operator QPointF" ref="a9cde4105b3b16cf3a15a48f3408f463e" args="() const " -->
<div class="memitem">
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      <table class="memname">
        <tr>
          <td class="memname">QVKeypoint::operator QPointF </td>
          <td>(</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td> const<code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Point conversion operator. Gets the location of the image feature in a QPointF object. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00075">75</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

</div>
</div>
<a class="anchor" id="abebe9e70ef7d88c5f311b4cd9c5a77ea"></a><!-- doxytag: member="QVKeypoint::location" ref="abebe9e70ef7d88c5f311b4cd9c5a77ea" args="() const " -->
<div class="memitem">
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      <table class="memname">
        <tr>
          <td class="memname">QPointF QVKeypoint::location </td>
          <td>(</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td> const<code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Gets the location of the image feature. Gets the location of the image feature in a QPointF object. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00079">79</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

<p>Referenced by <a class="el" href="classQVKeypoint.html#a9cde4105b3b16cf3a15a48f3408f463e">operator QPointF()</a>.</p>

</div>
</div>
<a class="anchor" id="a2c80b2e40b1e5e2585525d4b1ee5a58d"></a><!-- doxytag: member="QVKeypoint::x" ref="a2c80b2e40b1e5e2585525d4b1ee5a58d" args="()" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">double&amp; QVKeypoint::x </td>
          <td>(</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td><code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Horizontal coordinate of the image feature. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00082">82</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

<p>Referenced by <a class="el" href="group__qvsiftgpu.html#ga84ba9885258ee2d66f7a577ea09a4062">getSiftGPUFeatures()</a>, and <a class="el" href="group__qvip.html#ga301080d8b72707aaa755539efc7ab99a">saveSIFTDescriptorsInLoweSIFTFileFormat()</a>.</p>

</div>
</div>
<a class="anchor" id="ad084300ee994cf4e08e5957f9ea88afe"></a><!-- doxytag: member="QVKeypoint::x" ref="ad084300ee994cf4e08e5957f9ea88afe" args="() const " -->
<div class="memitem">
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      <table class="memname">
        <tr>
          <td class="memname">double QVKeypoint::x </td>
          <td>(</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td> const<code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Horizontal coordinate of the image feature. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00085">85</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

</div>
</div>
<a class="anchor" id="ac9ce66379d45defd17d419bb4eb6030f"></a><!-- doxytag: member="QVKeypoint::y" ref="ac9ce66379d45defd17d419bb4eb6030f" args="()" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">double&amp; QVKeypoint::y </td>
          <td>(</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td><code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Vertical coordinate of the image feature. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00088">88</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

<p>Referenced by <a class="el" href="group__qvsiftgpu.html#ga84ba9885258ee2d66f7a577ea09a4062">getSiftGPUFeatures()</a>, and <a class="el" href="group__qvip.html#ga301080d8b72707aaa755539efc7ab99a">saveSIFTDescriptorsInLoweSIFTFileFormat()</a>.</p>

</div>
</div>
<a class="anchor" id="a8a8ed89a8cbf7e7bc41b2212bca03ae2"></a><!-- doxytag: member="QVKeypoint::y" ref="a8a8ed89a8cbf7e7bc41b2212bca03ae2" args="() const " -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">double QVKeypoint::y </td>
          <td>(</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td> const<code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Vertical coordinate of the image feature. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00091">91</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

</div>
</div>
<a class="anchor" id="a2956acf9396b76e3b94a1e7a62351c5c"></a><!-- doxytag: member="QVKeypoint::scale" ref="a2956acf9396b76e3b94a1e7a62351c5c" args="()" -->
<div class="memitem">
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      <table class="memname">
        <tr>
          <td class="memname">double&amp; QVKeypoint::scale </td>
          <td>(</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td><code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Scale of the image feature. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00094">94</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

<p>Referenced by <a class="el" href="group__qvsiftgpu.html#ga84ba9885258ee2d66f7a577ea09a4062">getSiftGPUFeatures()</a>, and <a class="el" href="group__qvip.html#ga301080d8b72707aaa755539efc7ab99a">saveSIFTDescriptorsInLoweSIFTFileFormat()</a>.</p>

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<a class="anchor" id="a0274614c1bab48ccb045d300fdd0d8d4"></a><!-- doxytag: member="QVKeypoint::scale" ref="a0274614c1bab48ccb045d300fdd0d8d4" args="() const " -->
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          <td class="memname">double QVKeypoint::scale </td>
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<p>Scale of the image feature. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00097">97</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

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<a class="anchor" id="a7deaee6fcefb2b6e61d9bf90205d027c"></a><!-- doxytag: member="QVKeypoint::orientation" ref="a7deaee6fcefb2b6e61d9bf90205d027c" args="()" -->
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          <td class="memname">double&amp; QVKeypoint::orientation </td>
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<p>Orientation of the image feature. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00100">100</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

<p>Referenced by <a class="el" href="group__qvsiftgpu.html#ga84ba9885258ee2d66f7a577ea09a4062">getSiftGPUFeatures()</a>, and <a class="el" href="group__qvip.html#ga301080d8b72707aaa755539efc7ab99a">saveSIFTDescriptorsInLoweSIFTFileFormat()</a>.</p>

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<a class="anchor" id="a68a178a654a5aa9a3fad62ea9336aa16"></a><!-- doxytag: member="QVKeypoint::orientation" ref="a68a178a654a5aa9a3fad62ea9336aa16" args="() const " -->
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<p>Orientation of the image feature. </p>

<p>Definition at line <a class="el" href="qvkeypoint_8h_source.html#l00103">103</a> of file <a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a>.</p>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li>src/qvip/<a class="el" href="qvkeypoint_8h_source.html">qvkeypoint.h</a></li>
</ul>
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<a href="http://perception.inf.um.es">PARP research group</a>.
Copyright &copy; 2007, 2008, 2009, 2010, 2011.</center>
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